Fatal error: Call to a member function getLang() on a non-object in /var/www/chemiewerkt/system/ext/I18N/Translation2AdminWrapper.php on line 74

Call Stack:
    0.0004     146500   1. {main}() /var/www/chemiewerkt/index.php:0
    0.0166     614320   2. SJB_System::init() /var/www/chemiewerkt/index.php:58
    0.1406    3776284   3. SJB_ModuleManager->executeModulesStartupFunctions() /var/www/chemiewerkt/system/core/System.php:242
    0.1414    3818220   4. ThemeManager::getCurrentTheme() /var/www/chemiewerkt/system/core/ModuleManager.php:351
    0.1927    4824808   5. SJB_I18N->switchLang() /var/www/chemiewerkt/system/core/TemplateSupplier.php:271
    0.1927    4824832   6. I18NSwitchLanguageAgent->execute() /var/www/chemiewerkt/system/core/I18N.php:100
    0.1927    4824928   7. I18NSwitchLanguageAgent->fetchExistLanguage() /var/www/chemiewerkt/system/ext/I18N/I18NSwitchLanguageAgent.php:52
    0.1928    4825428   8. SJB_I18N->languageExists() /var/www/chemiewerkt/system/ext/I18N/I18NSwitchLanguageAgent.php:77
    0.1930    4830100   9. SJB_LanguageExistsValidator->isValid() /var/www/chemiewerkt/system/core/I18N.php:539
    0.1930    4830168  10. I18NDataSource->getLanguagesData() /var/www/chemiewerkt/system/lib/Validation/LanguageExistsValidator.php:35
    0.1930    4830192  11. I18NLanguageDataSource->getLanguagesData() /var/www/chemiewerkt/system/ext/I18N/I18NDatasource.php:158
    0.1930    4830328  12. Translation2AdminWrapper->getLangs() /var/www/chemiewerkt/system/ext/I18N/I18NLanguageDataSource.php:75
    0.1998    5395612  13. Translation2AdminWrapper->getLang() /var/www/chemiewerkt/system/ext/I18N/Translation2AdminWrapper.php:90